ox THE WIM) CHRYSANTHEMUM OF NORTH JAPAN. II 



clar scales of the sibiricum t>'pc in contrast to the cuiieate incised leaves and 

 oval involuclar scales of the arctiaiin type. Ledcbour'' was the first to re- 

 cot^nizc two species in the arctic littoral regions, distinguishing Leucantliemum 

 Giiielini Lebeb. from Leucantlicmuin arcticiim DC. The distinctive characters 

 of the former compared with those of the latter are the ramous stem, pinnati- 

 partcd lower leaves and narrower scarious black margin of involuclar scales. 

 Among the specimens from the high northern littoral regions, there are 

 different forms of Chrysanthcmmn arcticiiinp ie., those with the radical 

 leaves 3-7 dentated or subtrilobcd, or subpinnatifid and so on. As to the 

 interpretation of these forms and to the identification of the Gmelin's ])lant 

 to one of them, there remain naturally several possibilities according to the 

 different points of \iew. Trautvetter paid no special attention to the existing 

 different tj'pes and included them collectively under Leucanthemnm m-ticuin 

 DC.,^^ and he also placed the Gmelin's plant in this group. But judging 

 from his descriptions he seems to have had no pinnatiparted form described 

 by Ledcbour, which he had separated from the arcticiim type. Maximowicz'^ 

 suggested that the LeucanthciniDn Giiielini of Ledebour may be a variet>- of 

 Lciicantlicvium arcticuni DC, although he had treated it as synonymous.'''' 

 Herder"' like Trautvetter recognised no distinction between these two types. 

 Schmidt"' thought that one of his Saghalien .specimens was identical to the 

 Gmelin's plant but he treated it as synonimous to LeJicanthevmm arcticuni 

 for reason that he could find no good distinction. This probably resulted 

 from the little attention he gave to the character of the leaf and involuclar 

 scales, for I can see clearly the existence of those characters observed by 

 Ledebour and pointed out in Miyabe and Miyake's Saghalien Flora. Lastly 

 Miyahe*^' distinguished ChrysanthemiiDi arcticiim L. and Chrysanthemum 



1) Ledebour, Fl. Ros., Vol. II., \\ 541. 



2) Trautv. et Mey., Fl. Ocli., p. 156. 



3) Trautv. et Mey., 1. c, p. 15 s. 



4) Maximowicz, Prim. Fl. Amur. p. 15I). 



5) 1- c, p. 155- 



6) I. c„ p. 4S. 



7) Schmidt, F'l. Sach., 1S6S, p. 250. 



S) Miyabe, Flora of Saghalien, 1915, p. 250. 



This name was once used by Turczaninow. (Cat. Baik. Nr. 606). But as it is impresible to 

 think to find this Kamtschatkan plant in the district of Baical, we may pass it over. 



